If the system parameters are the same, it could be because the tolerance levels that were set for the different software were different i.e. the default power balance mismatch tolerances are not always the same in all software. Also probably if the VAR limits are active for PV buses, different software often have slightly different algorithms for bus-type switching and that could affect the solution maybe? Hope this helps.
Shruti On Thu, Nov 19, 2015 at 9:12 PM, Yogess H Singh <[email protected]> wrote: > Dear Fellow Member, > > I ran load flow analysis on a IEEE-14 bus system using MATPOWER, PSAT and > PowerWorld. Voltage magnitudes as well as phases have slightly different > values in all three tools. However, the difference is not much but I want > to know what causes difference among results obtained with different > software tool even if all the parameters are exactly same? > > > Best Regards, > > *Yogesh Kumar* > *Graduate Research Assistant* > *NE 2042, EECS Department* > *University of Toledo, OH 43507* > *+1 (419)530-8295 <%2B1%20%28419%29450-2217>* > -- Regards, Shruti Dwarkanath Rao Graduate Research Assistant, Arizona State University Vice Chair: IEEE PES ASU Student Chapter Tempe, AZ, 85281 650 996 0116
